Small bluetooth MP3 quality and enduring, in fact Chinese brand RUIZU and reference X 06. The only fault found: no manual in French, everything is in Chinese. So I took some time to find the "menu". We must, in fact repeatedly press the "theft" as a volume. Not easy! Several demonstrations on YouTube (in English) helped me. Good price / quality, but where did this fate AGPTek mark, since even on American sequences is well referenced RUIZU X 06?